[GitHub] mihai-cazacu-adswizz opened a new issue #6945: The materialized view is not created for a data source produced by Kafka Indexing Service

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mihai-cazacu-adswizz opened a new issue #6945: The materialized view is not created for a data source produced by Kafka Indexing Service
URL: https://github.com/apache/incubator-druid/issues/6945
 
 
   Hi,
   
   I'm trying to create a materialized view for a data source created by an ingestion from Kafka (using [Kafka Indexing Service](http://druid.io/docs/latest/development/extensions-core/kafka-ingestion.html)).
   
   The used spec:
   
   ```
   {
     "baseDataSource": "the-kafka-data-source",
     "dataSource": "the-kafka-data-source-view",
     "dimensionsSpec": {
       "dimensions": [
         "dimA",
         "dimB"
       ]
     },
     "metricsSpec": [
       {
         "fieldName": "metricA",
         "name": "metricASum",
         "type": "longSum"
       }
     ],
     "hadoopDependencyCoordinates": [
       "org.apache.hadoop:hadoop-client:2.7.3"
     ],
     "tuningConfig": {
       "jobProperties": {
         "fs.s3.impl": "org.apache.hadoop.fs.s3native.NativeS3FileSystem",
         "fs.s3n.impl": "org.apache.hadoop.fs.s3native.NativeS3FileSystem",
         "io.compression.codecs": "org.apache.hadoop.io.compress.GzipCodec,org.apache.hadoop.io.compress.DefaultCodec,org.apache.hadoop.io.compress.BZip2Codec,org.apache.hadoop.io.compress.SnappyCodec",
         "mapreduce.job.classloader": "true"
       },
       "type": "hadoop"
     },
     "type": "derivativeDataSource"
   }
   ```
   
   Once the spec is used, the Supervisor is successfully created but there is no task for creating the view.
   
   The Supervisor's payload:
   
   ```
   {
     "type": "derivativeDataSource",
     "baseDataSource": "the-kafka-data-source",
     "dimensionsSpec": {
       "dimensions": [
         {
           "type": "string",
           "name": "dimA",
           "multiValueHandling": "SORTED_ARRAY",
           "createBitmapIndex": true
         },
         {
           "type": "string",
           "name": "dimB",
           "multiValueHandling": "SORTED_ARRAY",
           "createBitmapIndex": true
         }
       ],
       "dimensionExclusions": []
     },
     "metricsSpec": [
       {
         "type": "longSum",
         "name": "metricASum",
         "fieldName": "metricA",
         "expression": null
       }
     ],
     "tuningConfig": {
       "type": "hadoop",
       "workingPath": null,
       "version": "2019-01-29T12:42:15.475Z",
       "partitionsSpec": {
         "type": "hashed",
         "targetPartitionSize": -1,
         "maxPartitionSize": -1,
         "assumeGrouped": false,
         "numShards": -1,
         "partitionDimensions": []
       },
       "shardSpecs": {},
       "indexSpec": {
         "bitmap": {
           "type": "concise"
         },
         "dimensionCompression": "lz4",
         "metricCompression": "lz4",
         "longEncoding": "longs"
       },
       "maxRowsInMemory": 1000000,
       "maxBytesInMemory": 0,
       "leaveIntermediate": false,
       "cleanupOnFailure": true,
       "overwriteFiles": false,
       "ignoreInvalidRows": false,
       "jobProperties": {
         "fs.s3.impl": "org.apache.hadoop.fs.s3native.NativeS3FileSystem",
         "fs.s3n.impl": "org.apache.hadoop.fs.s3native.NativeS3FileSystem",
         "io.compression.codecs": "org.apache.hadoop.io.compress.GzipCodec,org.apache.hadoop.io.compress.DefaultCodec,org.apache.hadoop.io.compress.BZip2Codec,org.apache.hadoop.io.compress.SnappyCodec",
         "mapreduce.job.classloader": "true"
       },
       "combineText": false,
       "useCombiner": false,
       "buildV9Directly": true,
       "numBackgroundPersistThreads": 0,
       "forceExtendableShardSpecs": false,
       "useExplicitVersion": false,
       "allowedHadoopPrefix": [],
       "logParseExceptions": false,
       "maxParseExceptions": 0
     },
     "dataSource": "the-kafka-data-source-view",
     "hadoopCoordinates": null,
     "hadoopDependencyCoordinates": [
       "org.apache.hadoop:hadoop-client:2.7.3"
     ],
     "classpathPrefix": null,
     "context": {},
     "suspended": false
   }
   ```
   
   and its status:
   
   ```
   {
     "id": "the-kafka-data-source-view",
     "generationTime": "2019-01-29T13:21:17.721Z",
     "payload": "{dataSource='the-kafka-data-source-view', baseDataSource='the-kafka-data-source', suspended='false', dimensions=[dimA, dimB], metrics=[metricASum], missTimeline[]}"
   }
   ```
   
   I've tried to use the same specification for another data source which was created by an ingestion task from S3 and it worked as expected.
   
   @zhangxinyu1: Is this a special case for Materalized View that requires a different approach?

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